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（中國航空規(guī)劃建設(shè)發(fā)展有限公司， 北京 100120）

［摘要］內(nèi)蒙古伊金霍洛旗全民健身體育中心為多層空間大懸挑結(jié)構(gòu)體系，大懸挑結(jié)構(gòu)根部構(gòu)件應(yīng)力高度集中。本工程在高應(yīng)力區(qū)的關(guān)鍵構(gòu)件及節(jié)點(diǎn)處應(yīng)用了高建鋼。在不同應(yīng)力比條件下，通過調(diào)節(jié)懸挑結(jié)構(gòu)根部構(gòu)件的截面面積，對(duì)采用高建鋼與采用普通鋼懸挑結(jié)構(gòu)的靜力彈塑性性能、抗震性能、關(guān)鍵節(jié)點(diǎn)的靜力性能進(jìn)行了對(duì)比分析。結(jié)果表明：在懸挑結(jié)構(gòu)應(yīng)力集中部位采用高建鋼能夠有效減小構(gòu)件吸收的應(yīng)力，大幅減少用鋼量，同時(shí)懸挑結(jié)構(gòu)的大變形能力、整體結(jié)構(gòu)在罕遇地震下的抗震性能以及關(guān)鍵節(jié)點(diǎn)的承載力和變形能力均有一定提高，而節(jié)點(diǎn)轉(zhuǎn)角延性系數(shù)雖然降低但仍有足夠的延性安全系數(shù)。

［關(guān)鍵詞］高建鋼; 懸挑結(jié)構(gòu); 應(yīng)力比; 延性性能; 彈塑性性能

中圖分類號(hào)：TU511,TU245.2    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2014)04-0001-08

Research on influence of high-rise structure steel on the multilayer cantilevered structure system and joints

Wang Mingzhu, Ge Jiaqi, Wang Shu, Zhang Guojun, Liu Xingang

(China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)

Abstract: The multilayer cantilevered structure system is used in the National Fitness Center in Ejin Horo Banner of Inner Mongolia, and stress is highly concentrated at the end of cantilevered structure. High-rise structure steel is used in key structures and joints of high stress concentration area. By regulating section area of the components at the end of cantilevered structure, high-rise structure steel scheme and common steel scheme were compared under different stress ratio in factors of static elasto-plastic performance, seismic performance and static performance of key joints. The results show that the use of high-rise structure steel at stress concentrated area can reduce the stress in key components and reduce the steel consumption greatly. At the same time, the large deformation capacity of the cantileverel structure and the seismic performance under rare earthquake of the whole structure increase as well as bearing capacity and deformation capacity of key joints. The joint rotation ductility factor decreases but is still within safe limits.

Keywords: high-rise structure steel; cantileverel structure; stress ratio; ductility performance; elastio-plastic performance

*北京市科技計(jì)劃課題（Z131110000213131），北京市科技新星計(jì)劃（Z121106002512098），國家自然科學(xué)基金重點(diǎn)項(xiàng)目（51038006）。

作者簡介：王明珠，碩士，工程師，Email：capdi.gssd@vip.163.com。 

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